Piston for internal-combustion engines



Sept. 21 192s. 1,600,558

M. B. MORROW PISTON FUR INTERNAL COMBUSTION ENGINES Filed Jan. 22. 1926 Hill] iiii 111m nu III :lllllllllllll ,IIIHII F ll llllllll I 01L awuemtoz,

Patented Sept. 21, 1926.

UNITED STATES TIYIION'J'.v 1B. MORROW, OF TACOMA, WASHINGTON.

PISTON FOR INTERNAL-COMBUSTION ENGINES.

Application filed January 22, 1926. Serial No. 83,049.

The device forming the subject matter of this application is a piston for an internal combustion engine, so constructed that it will fit closely within the cylinder, even when cold, novel means being provided whereby, when a piston becomes heated and expands, the piston will not stick or freeze in the cylinder, the aforesaid means embodying goose neck bends connecting the arcuate portion of the piston skirtwith the inset air-- cooled webs.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings:

Figure 1 shows in elevation, a piston constructed in accordance with the invention;

Figure 2 is a section on the line 22 of Figure l.'

Figure 3 is a bottom plan;

Figure 4 is a section on the line 4-4 of Figure 2.

The piston ordinarily is made of aluminum or an aluminum compound, and comprises a head 1 and a skirt 2 carried by the ea-d. The skirt 2 embodies oppositely disposed arcuate portions 3 shaped to fit closely in the cylinder wherein the piston operates. Inset parallel air-cooled Webs 4 are provided, and have bearings 5 which reject both inwardly and outwardly. vT e longitudinal edges of the webs 4 are connected with the longitudinal edges of the ancuate portions 3 by elastic, inwardly extended, goose-neck bends 6 which are disposed parallel to each other, and at right angles to the webs 4. There are restricted transverse slits 7 in the,

piston, the Same being located on opposite sides of the places 8 where the webs 4 join the head'l'. The slits 7 extend across the arcuate portions 3 and across the goose-neck bends 6. 'The skirt 2 has oppositely disposed end recesses 9 disposed at the outer extremities of the Webs 4, the recesses extending across the goose-neck bends 6, and the said goose-neck bends 6 extending continuously and unbrokenly from the slits 7 to the recesses 9. On its inner surface, the end of the head 1 is supplied with intersecting ribs 10 and 11, the rib 11 being joined to the inner ends of'the bearings 5, by fins 12 which are joined at their outer edges to the side wall of the head 1 and to the webs 4.

lVhen the arcuate portions 3 become heated and expand, they will not bind in the cylinder, because the elastic goose-neck bendsv 6 will yield enough to prevent such acontingency.

What is claimed is I j A piston for an internal combustion engine, comprising a head and a skirt carried 'by the head; the skirt including oppositely disposed arcuate portions shaped to fit closely in the cylinder wherein the iston' operates, inset parallel webs provided with bearings, and elastic inwardly extended goose-neck bends connecting the longitudinal edges of the webs with the longitudinal edges of the arcuate portions, the goose-neck bends being disposed parallelto each other and at right angles to the webs, there being restricted slits in the piston and located transversely of. the piston and on opposite sides of the places where the webs join the head, the slits extending across the arcuate portions and across the goose-neck'bends,

the skirt having end recesses disposed at the outer'extremities of the webs and extended across the goose-neck bends, the goose-neck bends extending continuously and unbrokenly from the slits to the recesses.

In testimony that I claim the foregoing as my own, I have hereto atlixed my signature,

MONT B. MORROW. 

